What is the beginning sequence of IPv6 link-local addresses?

The beginning sequence of IPv6 link-local addresses is FE80. Link-local addresses are specifically designed for communication within a single network segment and are automatically configured on all IPv6-enabled interfaces. These addresses are crucial for functions such as neighboring discovery, automatic address configuration, and local communication among devices on the same subnet.

When an IPv6 interface is enabled, it generates a link-local address that starts with FE80 and is followed by 54 bits set to zero, concluding with the last 64 bits derived from the interface's MAC address or manually assigned. This ensures that devices communicate effectively without requiring additional configuration.

The other options, while they represent different types of IPv6 addressing, do not pertain to link-local addresses: FE00 and FF00 are not utilized for link-local communications and relate to other types of address space, such as reserved for future use or multicast addresses. FF01, in particular, is associated with the multicast address that targets all nodes on the same link, which again emphasizes the importance of understanding the distinct functions of IPv6 address ranges.